CN211855369U - Proximity sensor - Google Patents
Proximity sensor Download PDFInfo
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- CN211855369U CN211855369U CN202020997319.7U CN202020997319U CN211855369U CN 211855369 U CN211855369 U CN 211855369U CN 202020997319 U CN202020997319 U CN 202020997319U CN 211855369 U CN211855369 U CN 211855369U
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Abstract
The utility model discloses a proximity sensor, a proximity sensor circuit is packaged in the equipment shell of the proximity sensor, and the proximity sensor circuit comprises a proximity sensing circuit, a sensing signal analysis circuit which is connected with the proximity sensing circuit by a circuit and an alarm circuit which is connected with the sensing signal analysis circuit by a circuit; the induction signal analysis circuit comprises a single chip microcomputer, and an induction signal output end of the proximity sensing circuit is electrically connected to a first designated pin of the single chip microcomputer; the alarm signal input end of the alarm circuit is electrically connected to a second designated pin of the singlechip; the proximity sensor circuit further comprises a power circuit, and the power circuit is connected with the proximity sensing circuit, the sensing signal analysis circuit and the alarm circuit and provides working voltage for the proximity sensor. The utility model discloses circuit structure is simple, low in manufacturing cost is honest and clean and has higher sensitivity, can satisfy the market demand.
Description
Technical Field
The utility model relates to an object sensing detects technical field, concretely relates to proximity sensor.
Background
The proximity sensor is a generic term for a sensor that aims to detect without touching a detection target, instead of a contact detection method such as a limit switch. The proximity sensor can detect movement information and presence information of an object and convert the movement information and presence information into an electrical signal. The proximity sensor has a wide application range, for example, human body movement information can be converted into infrared photoelectric signals, and when the human body is detected to be close, light is automatically turned on, so that the trouble of switching a light source in a contact mode is avoided. However, the existing proximity sensor has complex internal circuit and higher manufacturing cost, and the sensing sensitivity degree is not ideal enough, so that the market demand cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a circuit structure is simple, low in manufacturing cost is honest and clean and has higher sensitivity's proximity sensor to satisfy the market demand.
To achieve the purpose, the utility model adopts the following technical proposal:
providing a proximity sensor, wherein a proximity sensor circuit is encapsulated in an equipment shell of the proximity sensor, and the proximity sensor circuit comprises a proximity sensing circuit, a sensing signal analysis circuit and an alarm circuit, wherein the sensing signal analysis circuit is electrically connected with the proximity sensing circuit, and the alarm circuit is electrically connected with the sensing signal analysis circuit; the induction signal analysis circuit comprises a single chip microcomputer, and an induction signal output end of the proximity sensing circuit is electrically connected to a first designated pin of the single chip microcomputer; the alarm signal input end of the alarm circuit is electrically connected to a second designated pin of the singlechip;
the proximity sensor circuit further comprises a power circuit, and the power circuit is connected with the proximity sensing circuit, the induction signal analysis circuit and the alarm circuit and provides working voltage for each circuit in the proximity sensor.
As a preferred scheme of the present invention, the proximity sensing circuit includes an infrared photodiode D1, a transistor Q1, a resistor R1 and a resistor R2, the negative electrode of the infrared photodiode D1 is connected to a bias voltage VCC1, and the positive electrode of the infrared photodiode D1 is connected to the base electrode of the transistor Q1; the collector of the triode Q1 is connected with a power supply VCC2, and the emitter of the triode Q1 is connected with the resistor R2 and then grounded; the resistor R1 is connected between the base and the collector of the triode Q1; an emitter of the triode Q1 is used as the induction signal output end of the proximity sensing circuit and is electrically connected to the first appointed pin of the singlechip;
the first appointed pin of the single chip microcomputer is a fourth pin or a fifth pin of the single chip microcomputer.
As a preferable scheme of the present invention, the specific model of the single chip microcomputer in the sensing signal analyzing circuit is STC12LE5204 AD.
As a preferable scheme of the present invention, the sensing signal analyzing circuit further includes a reset circuit, the reset circuit includes a reset button, a resistor R4 and a capacitor C3, one end of the resistor R4 is connected to the power VCC3, and the other end of the resistor R4 is connected to the capacitor C3 and then grounded; the reset key is connected to two ends of the capacitor C3 in parallel; one end of the resistor R4, which is connected with the capacitor C3, is connected to the twelfth pin of the singlechip as the reset signal output end of the reset circuit.
As a preferable scheme of the present invention, the induced signal analyzing circuit further includes a crystal oscillator circuit, the crystal oscillator circuit includes a capacitor C1, a capacitor C2, a crystal oscillator Y1 and a resistor R3, one end of the resistor R3 is connected to the eleventh pin of the single chip microcomputer, and the other end of the resistor R3 is connected to the tenth pin of the single chip microcomputer; the crystal oscillator Y1 is connected in parallel to two ends of the resistor R3; one end of the capacitor C1 is connected with one end of the crystal oscillator Y1, one end of the capacitor C2 is connected with the other end of the crystal oscillator Y1, and the other ends of the capacitor C1 and the capacitor C2 are grounded.
As a preferred scheme of the present invention, the alarm circuit includes a speaker Bell, a triode Q2 and a resistor R5, one end of the resistor R5 is connected to the third pin of the single chip as the alarm signal input end of the alarm circuit, and the other end of the resistor R5 is connected to the base of the triode Q2; the collector of the triode Q2 is connected with the first end of the loudspeaker Bell; the second end of the loudspeaker Bell is connected with a power supply VCC 4; the emitter of the transistor Q2 is grounded.
As a preferable scheme of the present invention, the alarm circuit further includes a display circuit, the display circuit includes a first display circuit and a second display circuit, the first display circuit includes a resistor R6 and a light emitting diode D1, one end of the resistor R6 is connected to a power VCC5, the other end of the resistor R6 is connected to the anode of the light emitting diode D1, and the cathode of the light emitting diode D1 is connected to the ninth pin of the single chip microcomputer;
the second display circuit comprises a resistor R7 and a light-emitting diode D2, one end of the resistor R7 is connected with the power supply VCC5, the other end of the resistor R7 is connected with the anode of the light-emitting diode D2, and the cathode of the light-emitting diode D2 is connected with the seventh pin of the single chip microcomputer.
As a preferred embodiment of the present invention, the power circuit includes a voltage conversion chip, a second end of the voltage conversion chip is connected to a reverse diode IN1 and then to a power VCC, a first end of the voltage conversion chip is grounded, a capacitor C4 is connected IN series between the first end and the second end of the voltage conversion chip, and a third end of the voltage conversion chip is connected IN series to a capacitor C5 and then to a ground; the third end of the voltage conversion chip is used as a voltage output end of the power circuit and is connected with voltage input ends of the proximity sensing circuit, the induction signal analysis circuit and the alarm circuit, and working voltage is provided for the proximity sensor.
As an optimized scheme of the utility model, the specific model of voltage conversion chip is HT 7533.
The utility model discloses circuit structure is simple, low in manufacturing cost is honest and clean and has higher sensitivity, can satisfy the market demand.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a general circuit configuration diagram of the proximity sensor circuit packaged inside the proximity sensor provided by an embodiment of the present invention;
FIG. 2 is a circuit configuration diagram of the proximity sensing circuit;
FIG. 3 is a circuit configuration diagram of the induced signal analyzing circuit;
FIG. 4 is a circuit configuration diagram of the alarm circuit;
fig. 5 is a circuit configuration diagram of the power supply circuit.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 shows a schematic diagram of an overall circuit configuration of a proximity sensor circuit packaged in a housing of a proximity sensor device provided in the present embodiment. Referring to fig. 1, the proximity sensor circuit includes a proximity sensing circuit 10, a sensing signal analyzing circuit 20 electrically connected to the proximity sensing circuit 10, and an alarm circuit 30 electrically connected to the sensing signal analyzing circuit 20; the induced signal analyzing circuit 20 comprises a single chip microcomputer 1 (preferably an STC12LE5204AD type single chip microcomputer, and may also preferably an STM32F103RBT6 type single chip microcomputer), and the following description will be given of a circuit structure of the proximity sensor circuit by taking the STC12LE5204AD type single chip microcomputer as an example:
the induction signal output end 101 of the proximity sensing circuit 10 is electrically connected to a first designated pin (a fourth pin or a fifth pin of an STC12LE5204AD type single chip microcomputer) of the single chip microcomputer 1; an alarm signal input end 301 of the alarm circuit 30 is electrically connected to a second specified pin (a third pin of an STC12LE5204AD type single chip microcomputer) of the single chip microcomputer 1;
the proximity sensor circuit further comprises a power circuit 40, and the power circuit 40 is electrically connected with the proximity sensing circuit 10, the sensing signal analyzing circuit 20 and the alarm circuit 30 to provide working voltages for the circuits in the proximity sensor.
The following specifically describes the circuit configuration of each circuit in the proximity sensor:
fig. 2 shows a schematic circuit diagram of the proximity sensing circuit 10. Referring to fig. 2 and fig. 1, the proximity sensing circuit 10 includes an infrared photodiode D1, a transistor Q1, a resistor R1, and a resistor R2, wherein a negative electrode of the infrared photodiode D1 is connected to a bias voltage VCC1, and a positive electrode of the infrared photodiode D1 is connected to a base electrode of the transistor Q1; the collector of the triode Q1 is connected with a power supply VCC2, and the emitter of the triode Q1 is connected with the resistor R2 and then grounded; the resistor R1 is connected between the base and collector of the transistor Q1; an emitter of the triode Q1 is electrically connected to a first designated pin of the singlechip 1 as an induction signal output end 101 of the proximity sensing circuit 10;
the first appointed pin of the STC12LE5204AD type singlechip is the fourth pin or the fifth pin.
The infrared photodiode D1 is a general infrared photodiode. The transistor Q1 is an NPN8025 type transistor. The voltage value of the bias voltage VCC1, the resistance values of the resistor R1 and the resistor R2 can be reasonably set according to the requirement on the sensing sensitivity of the proximity sensor, for example, the resistance value of the resistor R1 is 1M Ω, and the resistance value of the resistor R2 is 0.1 kilo Ω.
The power supply VCC2 is the output voltage of the power supply circuit 40.
Fig. 3 shows a schematic circuit diagram of the induced signal analyzing circuit 20. Referring to fig. 3 and fig. 1, the sensing signal analyzing circuit 20 further includes a reset circuit 50, the reset circuit 50 includes a reset button 501 disposed on the housing of the proximity sensor device, a resistor R4 and a capacitor C3, one end of the resistor R4 is connected to the power source VCC3, and the other end of the resistor R4 is connected to the capacitor C3 and then grounded; the reset key 501 is connected in parallel to two ends of the capacitor C3; one end of the resistor R4 connected with the capacitor C3 is connected to the twelfth pin of the single chip microcomputer 1 as the reset signal output end 502 of the reset circuit 50. The singlechip 1 resets the proximity sensor according to the received reset signal.
The power supply VCC3 is also the output voltage of the power supply circuit 40. The resistance of the resistor R4 and the capacitance of the capacitor C3 can be set appropriately according to the actual working requirements of the proximity sensor, and the specific resistance of the resistor R4 and the specific capacitance of the capacitor C3 are not described herein.
With reference to fig. 3 and fig. 1, the sensing signal analyzing circuit 20 further includes a crystal oscillator circuit 60, the crystal oscillator circuit 60 includes a capacitor C1, a capacitor C2, a crystal oscillator Y1 and a resistor R3, one end of the resistor R3 is connected to the eleventh pin of the single chip microcomputer, and the other end of the resistor R3 is connected to the tenth pin of the single chip microcomputer; the crystal oscillator Y1 is connected in parallel at two ends of the resistor R3; one end of the capacitor C1 is connected to one end of the crystal oscillator Y1, one end of the capacitor C2 is connected to the other end of the crystal oscillator Y1, and the other ends of the capacitor C1 and the capacitor C2 are grounded.
Fig. 4 shows a schematic circuit diagram of the alarm circuit 30. Referring to fig. 4 and fig. 1, the alarm circuit 30 includes a speaker Bell, a transistor Q2 and a resistor R5, one end of the resistor R5 is connected to a third pin of the single chip as the alarm signal input end 301 of the alarm circuit 30, and the other end of the resistor R5 is connected to a base of the transistor Q2; the collector of the triode Q2 is connected with the first end of the loudspeaker Bell; the second end of the speaker Bell is connected to a power supply VCC4, and the power supply VCC4 may be a voltage output by the power supply circuit 40 or an externally input working voltage for the speaker to work; the emitter of transistor Q2 is connected to ground. Transistor Q2 is also preferably an NPN transistor.
The utility model discloses except can carrying out audible alarm through the speaker, go back accessible LED pilot lamp luminescence mode and indicate the warning. Specifically, referring to fig. 1, the alarm circuit 30 further includes a display circuit 70, the display circuit 70 includes a first display circuit and a second display circuit, the first display circuit includes a resistor R6 and a light emitting diode D1, one end of the resistor R6 is connected to the power source VCC5, the other end of the resistor R6 is connected to the anode of the light emitting diode D1, and the cathode of the light emitting diode D1 is connected to the ninth pin of the single chip;
the second display circuit comprises a resistor R7 and a light-emitting diode D2, one end of the resistor R7 is connected with a power supply VCC5, the other end of the resistor R7 is connected with the anode of a light-emitting diode D2, and the cathode of the light-emitting diode D2 is connected with the seventh pin of the single chip microcomputer.
The power source VCC5 may be the output voltage of the power source circuit 40 or an external voltage. The value of the supply voltage of power supply VCC5 is set according to the operational needs of the display circuit.
Fig. 5 shows a schematic circuit configuration diagram of the power supply circuit 40. Referring to fig. 5 and fig. 1, the power circuit 40 includes a voltage conversion chip 401, a second terminal of the voltage conversion chip 401 is connected to a reverse diode IN1 and then to a power VCC, a first terminal of the voltage conversion chip 401 is grounded, a capacitor C4 is connected IN series between the first terminal and the second terminal of the voltage conversion chip 401, and a third terminal of the voltage conversion chip 401 is connected IN series to a capacitor C5 and then to a ground; the third terminal of the voltage conversion chip 401 is used as the voltage output terminal of the power circuit 40 to connect to the voltage input terminals of the proximity sensor circuit 10, the sensing signal analysis circuit 20 and the alarm circuit 30, so as to provide the working voltage for the proximity sensor.
The voltage conversion chip 401 is preferably an existing HT7533 type chip.
It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.
Claims (9)
1. A proximity sensor, wherein a proximity sensor circuit is enclosed in an equipment housing of the proximity sensor, the proximity sensor circuit comprising a proximity sensing circuit and a sensing signal analyzing circuit in circuit connection with the proximity sensing circuit and an alarm circuit in circuit connection with the sensing signal analyzing circuit; the induction signal analysis circuit comprises a single chip microcomputer, and an induction signal output end of the proximity sensing circuit is electrically connected to a first designated pin of the single chip microcomputer; the alarm signal input end of the alarm circuit is electrically connected to a second designated pin of the singlechip;
the proximity sensor circuit further comprises a power circuit, and the power circuit is connected with the proximity sensing circuit, the induction signal analysis circuit and the alarm circuit and provides working voltage for each circuit in the proximity sensor.
2. The proximity sensor of claim 1, wherein the proximity sensing circuit comprises an infrared photodiode D1, a transistor Q1, a resistor R1 and a resistor R2, wherein a cathode of the infrared photodiode D1 is connected to a bias voltage VCC1, and an anode of the infrared photodiode D1 is connected to a base of the transistor Q1; the collector of the triode Q1 is connected with a power supply VCC2, and the emitter of the triode Q1 is connected with the resistor R2 and then grounded; the resistor R1 is connected between the base and the collector of the triode Q1; an emitter of the triode Q1 is used as the induction signal output end of the proximity sensing circuit and is electrically connected to the first appointed pin of the singlechip;
the first appointed pin of the single chip microcomputer is a fourth pin or a fifth pin of the single chip microcomputer.
3. The proximity sensor of claim 1, wherein the single chip microcomputer in the sensing signal analyzing circuit is of a specific model STC12LE5204 AD.
4. The proximity sensor according to claim 1, wherein the sensing signal analyzing circuit further comprises a reset circuit, the reset circuit comprises a reset button, a resistor R4 and a capacitor C3, one end of the resistor R4 is connected to a power source VCC3, and the other end of the resistor R4 is connected to the capacitor C3 and then grounded; the reset key is connected to two ends of the capacitor C3 in parallel; one end of the resistor R4, which is connected with the capacitor C3, is connected to the twelfth pin of the singlechip as the reset signal output end of the reset circuit.
5. The proximity sensor according to claim 1, wherein the sensing signal analyzing circuit further comprises a crystal oscillator circuit, the crystal oscillator circuit comprises a capacitor C1, a capacitor C2, a crystal oscillator Y1 and a resistor R3, one end of the resistor R3 is connected to the eleventh pin of the single chip microcomputer, and the other end of the resistor R3 is connected to the tenth pin of the single chip microcomputer; the crystal oscillator Y1 is connected in parallel to two ends of the resistor R3; one end of the capacitor C1 is connected with one end of the crystal oscillator Y1, one end of the capacitor C2 is connected with the other end of the crystal oscillator Y1, and the other ends of the capacitor C1 and the capacitor C2 are grounded.
6. The proximity sensor as claimed in claim 1, wherein the alarm circuit comprises a speaker Bell, a transistor Q2 and a resistor R5, one end of the resistor R5 is connected to a third pin of the single chip microcomputer as the alarm signal input end of the alarm circuit, and the other end of the resistor R5 is connected to a base of the transistor Q2; the collector of the triode Q2 is connected with the first end of the loudspeaker Bell; the second end of the loudspeaker Bell is connected with a power supply VCC 4; the emitter of the transistor Q2 is grounded.
7. The proximity sensor according to claim 1 or 6, wherein the alarm circuit further comprises a display circuit, the display circuit comprises a first display circuit and a second display circuit, the first display circuit comprises a resistor R6 and a light emitting diode D1, one end of the resistor R6 is connected with a power supply VCC5, the other end of the resistor R6 is connected with the anode of the light emitting diode D1, and the cathode of the light emitting diode D1 is connected with the ninth pin of the single chip microcomputer;
the second display circuit comprises a resistor R7 and a light-emitting diode D2, one end of the resistor R7 is connected with the power supply VCC5, the other end of the resistor R7 is connected with the anode of the light-emitting diode D2, and the cathode of the light-emitting diode D2 is connected with the seventh pin of the single chip microcomputer.
8. The proximity sensor of claim 1, wherein the power circuit comprises a voltage converting chip, a second terminal of the voltage converting chip is connected to a reverse diode IN1 and then to a power VCC, a first terminal of the voltage converting chip is connected to a ground, a capacitor C4 is connected IN series between the first terminal and the second terminal of the voltage converting chip, and a third terminal of the voltage converting chip is connected to a capacitor C5 and then to a ground; the third end of the voltage conversion chip is used as a voltage output end of the power circuit and is connected with voltage input ends of the proximity sensing circuit, the induction signal analysis circuit and the alarm circuit, and working voltage is provided for the proximity sensor.
9. The proximity sensor of claim 8, wherein the voltage conversion chip has a specific model number HT 7533.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020997319.7U CN211855369U (en) | 2020-06-03 | 2020-06-03 | Proximity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020997319.7U CN211855369U (en) | 2020-06-03 | 2020-06-03 | Proximity sensor |
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| Publication Number | Publication Date |
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| CN211855369U true CN211855369U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020997319.7U Active CN211855369U (en) | 2020-06-03 | 2020-06-03 | Proximity sensor |
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| CN (1) | CN211855369U (en) |
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- 2020-06-03 CN CN202020997319.7U patent/CN211855369U/en active Active
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